烤烟育苗按栽培方式可分为露地育苗和保温床育苗两大类。东北烟区由于早春气温低而多采用保温床育苗。下面介绍保温床育苗的几种方法。普通温床育苗.苗床采用填装酿热物使其自然发酵产生热量,增加床温,再覆盖塑料薄膜克服早春低温,以利提早播种,培养壮苗。具体做法是自表土下挖10—13厘米,使床底呈拱形,四周稍低,中间略高以利排水。床长12米,宽2米。挖好后在四周用10厘米粗的秫秸把围起做框,也可采用薄木板。然后放入酿热物。玉米秸切成6—7厘米长,铺7厘米厚;再铺7—9厘米厚的马粪,浇水踩实。填土2—3厘米厚,铺细砂2厘米厚。上面再铺配好的床土7—10厘米。床土以过筛的猪圈粪为主,每床约1500公斤,配合过磷酸钙10公斤、充分发酵的饼肥15—20公斤、三元复合肥1—2公斤,浇透水后待播种 Flue-cured tobacco seedlings by cultivation methods can be divided into field nursery and incubation nursery two categories. Tobacco production in northeastern tobacco area due to low temperature in early spring and more use of incubator. Here are several ways to incubate nursery bed. Common seedbed nursery seedbed filled with stuffed stuffing to make its natural fermentation heat, increase bed temperature, and then covered with plastic film to overcome the early spring low temperature, to facilitate early sowing, training strong seedlings. The specific approach is to dig 10-13 cm from the topsoil, so that the bed was arched, slightly lower around the middle slightly higher to facilitate drainage. The bed is 12 meters long and 2 meters wide. After dredging around with 10 cm thick straw strapping to do around the box, you can also use thin wood. Then add the stuffed stuff. Corn stalks cut into 6-7 cm long, shop 7 cm thick; then shop 7-9 cm thick horse manure, water step trample. Fill 2-3 cm thick, shop sand 2 cm thick. Above and then paved a good bed soil 7-10 cm. Bed soil to the main screening of pigsty, each bed of about 1500 kg, with superphosphate 10 kg, 15-20 kg full fermentation of cake fertilizer, ternary compound fertilizer 1-2 kg, after sowing through the water to be sown